Improvement in slate-dressing machines



L. WARNER.

SLATE-DRESSING MACHINE.

Patented April 11, 1876.

N.PETERS, PHOTOLITHOGRAPNEIR, WASHINGTON. D C.

UNITED STATES PATENT OFFICE.

LYMAN WARNER, OF BELVIDERE, NEW JERSEY.

IMPROVEMENT IN SLATE-DRESSING MACHINES.

Specification forming part of Letters Patent No. 176,103, dated April11, 1876; application filed November 3, 1875.

To all whom it may concern:

Be it known thatI, LYMAN WARNER, of Belvidere, in the county of Warrenand State of New Jersey, have invented certain new and usefulImprovements in Tables or Machines for Surfacing or Dressing Slate,8tc.; and I do hereby declare that the following is a full, clear, andexact description thereof, which will enable others skilled in the artto which it appertains to make and use the same, reference being bad tothe accompanying drawings, and' to the letters of reference markedthereon, which form a part of this specification, in which- Figure 1 isa plan view of my improved slate, 850., surfacing or dressing table.Fig. 2 is a vertical section thereof through the dotted line 17 a: ofFig. 1, and Fig. 3 is a similar view thereof through the dotted line y yof the same figure.

Corresponding parts of the several figures are designated by likeletters.

This invention relates to a certain improvement in tables or machinesforsurfacing or dressing slate, 85c; and it consists of a circu cular orother shaped table, to which is affixed or adjusted, on a lower plane, aleaf, and which 1s provided with an opening or groove to receive arotating cutter or cutters, substantially as hereinafter more fullysetforth.

In the annexed drawing, A refers to a table, supported upon legs a a,braced at their lower egds by pieces a a, uniting with each other attheir centers, where they are provided with a socket or orifice toreceive and form a bearing for the lower end of the shaft or axis B, itsupper end being socketed, and receiving a pintle or stud, b, dependingfrom the said table, the shaft being free to turn thereon. To the pintleA is affixed or adjusted, by screws 0 c, or otherwise, on a lower plane,the leaf (J to receive the slate, 850., to be surfaced or dressed. Inthe table A is a circular groove or opening, 01, to receive theupwardly-projecting cutters D D attached to a frame, E, or other mediumconnected to the shaft or axis B, rotated by pulleys and belt, 850. Asthe slate or other material is passed from the leaf 0 onto the table, itbeing lower than the table, as above intimated, the operation ofsurfacing or dressing the same will take place, an amount of the slateor other material being cut off equal to the difference in heightbetween the table and leaf. To permit of the slate or other material(being dressed) being drawn over the table, it (the latter) is pro videdin its upper surface with an oblong concavity or depression, 6, toreceive one of the fingers of the hand. The leaf 0 may be raised orlowered by its adjusting-screws c c or other mechanism when it isdesired to vary the difference in height between it and the table inregulating the amount of thickness to be out from the slate or othermaterial being surfaced or dressed. The opening 01 may have its greaterportion bridged, as shown at f f, and the table A provided with a guideor strip, g, to guide the slate or other material as it passes over thesame. The removal of the bridgeff will not affect the nature of myinvention, notwithstanding, in that case, to provide the table with thegroove or opening d it would have to be formed in two parts.-

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is

1. In combination with the table A, the cutter groove or opening 01 andleaf 0, the rotatin g cutter or cutters D D, substantially as and forthe purpose set forth.

2. The table A, having the groove or opening dand leaf 0, in combinationwith the out ters D D, frame E, shaft or axis B, substantially as andfor the purpose set forth.

In testimony that I claim the foregoing as my own I affix my signaturein presence of two witnesses.

LYMAN WARNER.

Witnesses ALMON WARNER, S. SHERRERD.

